What is the name of this 3D shape?
Dodecahedron
What is the name of this 3D shape?
Tetrahedron
What shape would this net make?
Pyramid
Would you get a rectangular prism from this net?
No, I wouldn't. It is a cube.
How many vertices does an octahedron have?
6
How many edges does a cube have?
12
How many triangles make up an icosahedron?
20
How many faces does a triangular prism have?
5
How many edges does a sphere have?
0
What net would you use to make this shape?
A
A boy who is 1.6 m tall casts a 2.4 m shadow when he stands 8.1 m from the base of an electric light pole. How high above the ground is the light globe?
The height of the light globe is 7 m.
A piece of timber leaning against a wall, just touches the top of a fence, as shown. Find how far up the wall the timber reaches.
At 2.67 m above the timber reaches the wall.
The height of the tree is...
7.68m
The height of this office tower is...
420,48m
A ladder 13 m long is placed on the ground in such a way that it touches the top of a vertical wall 12 m high. Find the distance of the foot of the ladder from the bottom of the wall.
The distance of the foot of the ladder from the bottom of the wall is 5 meters.
An firefighter's extension ladder is leaning against a building, so its top just touches the gutters at the roof edge. You know the ladder is 41 feet long and it is 9 feet from the wall of the building. How high is the building?
The building is 40 ft.
